Diễn đàn hỗ trợ Firefox

I get screen tearing on videos or when i scroll on any website. Only happens on Firefox, I've tested Chrome, Edge, Opera.

https://streamable.com/80gxcm

Smooth Scrolling is Off. Hardware Acceleration is Off. I've tried toggling "gfx.font_rendering.directwrite.force-enabled" Firefox is up to date.

None of this has helped.

While running Firefox on MacBookAir with macOS 15.7.2 to browse simple websites I keep getting the below warning message. I may have 2 or 3 other apps open (like Apple Mail, MS-Word, Preview). "Heavy memory usage You're running out of memory and your Mac may become noticeably slower. Consider quitting some applications. Firefox 2,48 GB" So I quit Firefox to re-open again and continue my work. Does somebody has an hint where this message can come from ? Any settings to change on my MAC ? Thanks for helping

I had two Firefox windows on my computer, one with a few tabs of Youtube and Twitch pages, and a private window with a single Twitch stream. I've had them and the program open for days, with my conputer turned on and off multiple times with no issues.

Today I booted a game I installed yesterday on my computer and played for a few hours, after closing the game, both my Firefox windows became completely inaccessible.

I've tried closing firefox, restarting my computer, letting Firefox create a new xulstore file and nothing has worked. I can't see the window, I can't make it active. It's permanently minimised.

It spikes Desktops Windows Manager to 100% GPU usage, it makes my PC lag and run slow, and I can't do anything in the browser cause the window won't stay open or up. I can't even open the old window and then a new one, it stays minimised and I can only see the preview by hovering my mouse over it.

I've tried GPU driver updates, I tried anti virus scanning, and I've tried opening another browser which did work. But Firefox is the one with all my saved settings and preferred browser. I also can't see the Firefox window at all when using the window key + TAB to check my desktop, but it does show up on Task Manager as running.

Please help me restore my program. I'm making this on my phones firefox browser which is running fine

'I am running fiefox version 147.0.3 in MacOS version 26.2. Every second time I start the program firefox tries to take 15GB of memory. The process does not respond (as this is equivalent to more than the memory available plus the swap space). I have to kill the process and the second time the program has standar memory needs. How can I help developers?

So out of nowhere, I can't use the back button, or delete pages by clicking the 'x. I can't even click on the settings icon, or any icon on the menu bar. When I hover over any web page title, it shows a small window of it, but I can't get rid of it. I didn't change anything, so what's going on?

Firefox has been my entire family's browser of choice for as long as I can remember. Which one am I supposed to use now that Firefox won't quit shoving bloatware and diminished performance at me? I'm also seeing articles stating that they plan on making it even worse with more AI. I'm supposed to let them steal my data and turn my browser into sludge with absolutely no benefit to myself? And they're asking me to donate to them on top of it???

Does anyone know of a viable Firefox alternative that isn't a chrome dupe?

When playing YouTube videos in Firefox, the video constantly hangs or freezes. I have to restart the browser to continue playback. This happens every time I try to watch videos on youtube. what is going on?

I have a problem: when I open any Instagram reels link like from google , facebook , forum , etc https://www.instagram.com/reels/****/ the browser freezes. After a bit, a “stop” message shows up. When I click it, it opens a blank page like the one in the screenshots, and the tab completely freezes — I can’t go back, forward, or even close it. Even if I close the browser, it keeps running in the background. There are no extensions enabled (I’m using troubleshoot mode). windows 10 64

Hi!

I've had issues with Firefox now for quite a while and they only seem to be getting worse. Performance is really bad, it's lagging while browsing, especially infuriating when typing as the letters come out at a stuttering pace. I've tried disabling extensions one by one, I've tried troubleshoot mode and experienced no major difference.

If I can't solve this soon enough I won't be able to keep using Firefox, as the experience is so frustrating. And it would be a shame since I've come to like it quite much.

Thanks!

Having heard the news that Firefox's latest CEO wants to turn it into yet another AI-slop browser, I came to this forum to give feedback as an avid Firefox user over the last 4-5 years. I can see I'm not alone either; there are tons of other users who seem to feel the same way I do.

This is a very, VERY bad decision. So far, every "AI update" that has already hit Firefox has done nothing but make the browser worse and more inefficient. A few months ago, Mozilla was getting hit by complaints from desktop users about memory usage skyrocketing due to the implementation of an AI chatbot into Firefox. Now they've added AI search engines among other things. And surprise, surprise--no one seems to actually want to use these features. Why should we, if all it does is make computers run slower, overheat, and doesn't actually answer any useful questions or contribute anything meaningful?

I'm baffled at Mr. Enzor-DeMeo saying he wants to go all-in on making Firefox an "AI browser" with his whole chest in the SAME week that Microsoft has had to lower their growth targets for AI-related sales, some of them up to 50%, because NO ONE seems to actually be buying AI products. You know, on account of (you guessed it) not finding them very useful.

Other people have already mentioned the myriad of other problems with AI too, so I won't touch on those too much, other than to agree that AI is a plagiarism machine that's doing serious environmental damage. What I WILL say is that I personally have been using Firefox all this time specifically because it's avoided the AI craze as much as other browsers, or at the very least, avoided making it "opt-out" instead of "opt-in" to the same degree. But if this changes in the near future and Firefox does become yet another inefficient AI slopfest of a browser, I may seriously rethink my loyalty to Firefox and switch back to Chrome instead. After all, there would be functionally no difference between the two browsers anyway!

Please rethink this decision and consider actually listening to user feedback going forward. If Mozilla actually wants to retain their userbase, I'm sure I'm not the only person thinking about dropping Firefox for Chrome in the future.

I'm listening music from youtube and playing Guild Wars 2 in the same time. Tell me pls bc I think it's unnormal, why I see in task manager that Firefox is opened 12-17 times?...

Hi,

I’ve recently noticed that after a Firefox update, the browser has become very slow and unresponsive whenever I open multiple tabs, around 5–10. Before this update, I could open many tabs without any noticeable lag.

Now, new tabs take a long time to load, scrolling within open tabs feels choppy, and sometimes Firefox freezes for a few seconds before responding again.

I’ve already tried restarting Firefox, disabling extensions one by one, and clearing the cache, but none of these steps have improved the performance. I’m using Windows 10 and the latest version of Firefox.

Could anyone suggest what settings or troubleshooting steps I can try to fix this slowdown?

I often keep many tabs open for research, and Firefox memory usage grows significantly over time. Are there practical settings or habits that help manage memory without sacrificing usability?

Why I am receiving regular message from web page "https://fno.5paisa.com/open-interest/oi-dashboard?name=HINDALCO&exch=N&exchtype=D" that this page is slowing firefox, stop it ?